dialog listlengths 4 30 | title stringlengths 15 150 | category stringclasses 14 values | dialog_time stringdate 2016-01-21 01:59:30 2018-07-01 01:34:46 |
|---|---|---|---|
[
{
"message": "I want to apply a GLCM texture filter to some aerial photographs that I have. I am using the skimage package to compute the GLCM and a package called rios to handle the i/o.Rios - raster input output simplification - reads imagery in as a 400 x 400 x nbands numpy array and handles the creation of ... | GLCM texture parameters? | gis | 2017-04-06T16:19:36.933 |
[
{
"message": "I'm trying to figure out how to get my Torque animation to start automatically when my map is loaded. Here is a sample map:<a href=\"https://maxhartshorn.carto.com/builder/5bc3e784-ff74-40ef-8ae0-9fa85b6e13fa/embed?state=%7B%22map%22%3A%7B%22ne%22%3A%5B34.813803317113155%2C-177.5390625%5D%2C%22sw%... | How to automatically start a Torque animation using Carto Builder | gis | 2017-04-06T16:26:28.397 |
[
{
"message": "I'm working on a map with lots of infowindows, many of which are too tall for the embed window, which requires some awkward scrolling in order to exit out of any given card. Is it possible to modify the styling of the infowindow on Carto to make the pop-up cards horizontal? Or to change the dimens... | Modifying styling on infowindows (Carto)? | gis | 2017-04-06T16:43:17.610 |
[
{
"message": "I have created a relationship between two feature classes(one to many) and i want to have the sum of a field in tableB(many) into a cell in TableA (one), TableA is states and tableB is roads within the state, so i want the sum of roads in each state(in a field in tableA). I have created one to man... | Sum the field of a relationship table into the source table | gis | 2017-04-06T17:02:58.373 |
[
{
"message": "When using processing tool in pyqgis and run, it always creates a progress bar. Is there a way to disable it?<pre><code>processing.runalg('qgis:fixeddistancebuffer', _layer, distance_tolerance, 10, False, None)</code></pre>I want to disable it because I get this error when I run my script in travi... | (pyqgis) Is there a way to disable the progress bar in the processing tool | gis | 2017-04-06T22:15:25.897 |
[
{
"message": "The situation is:There are many photos (between 900 to 3000), geotagged and I can see them on MapInfo. The photos are of certain objects and there may be 2 to 8 photos for each object. These objects are also visible in MapInfo as a separate layer. Something I do with them is I go through each one ... | Group geotagged photos in MapInfo | gis | 2017-04-06T23:46:05.373 |
[
{
"message": "I want to create a heatmap, I have a shapefile of us and geocoded 2000 addresses on it. Now I want to measure density of points and cluster by heatmap. I assume I need a longitude and latitude, but my addresses are based on street, city, state and country. How can I convert to x and y. Do I need t... | Creating heatmap based on address | gis | 2017-04-07T20:05:11.507 |
[
{
"message": "I am new to Leaflet and I have a large image which I have been attempting to break up into tiles and save them using the correct filenames so that they can be displayed using Leaflet's tileLayer. I am trying to keep it simple first by breaking up the large image into just one layer of tiles. But... | How do I set up a one layer custom tile in Leaflet | gis | 2017-04-08T23:56:47.813 |
[
{
"message": "I am trying to write a script that would go through my directory and open each <code>*.tif</code> file, evaluate each of their 120 bands and write the results out to another 120 multiband <code>*.tif</code> file. The only way I could figure out how to do this was to iterate through the input direc... | Calling individual bands from multiband.tif in python perform action and save output in mutilband.tif? | gis | 2017-04-10T03:10:36.663 |
[
{
"message": "I'm using leaflet in my project for longer period of time. Now it is required to use <a href=\"https://goo.gl/bs3W7F\" rel=\"nofollow noreferrer\">Street View feature of google map with it's Peg Men. Is it feasible? I've another question in mind where will I be allowed to consume all the feat... | Is it possible to use all Google Maps feature with Leaflet's GoogleMutant API | gis | 2017-04-10T07:44:21.233 |
[
{
"message": "Original problem : I tend to often invert X & Y in WGS84 lat/long CSV import. I'm wondering now if there is a way not to reimport the original file (as this is the basic solution for points) and invert geometries . My idea : a query on the geometry field may work to create a new layer based on... | Is there a way to use a spatial query to invert X and Y coordinates in QGIS? | gis | 2017-04-10T15:33:08.353 |
[
{
"message": "I am trying to categorize a polygon layer with several buildings, by the number of floors.I want to aggregate by classes like this way:<pre><code>1 floor = 1 to 2 floors;2 floors = 1 to 2 floors;3 floors = 3 to 4 floors;4 floors = 3 to 4 floors;5 floors = 5 to 6 floors;6 floors = 5 to 6 floors</co... | Categorizing multiple entries in QGIS? | gis | 2017-04-10T18:01:52.687 |
[
{
"message": "I'm trying to import ArcGIS shapefile to PostGIS. I get an error like this:<a href=\"https://i.stack.imgur.com/nKhKr.png\" rel=\"nofollow noreferrer\">My client and server encoding both of them \"UTF-8\"<a href=\"https://i.stack.imgur.com/Ad2rg.png\" rel=\"nofollow noreferrer\"><a href=\"https://i... | Error while importing shapefile to PostGIS | gis | 2017-04-10T18:52:24.023 |
[
{
"message": "I have a large radar image (1.1GB) from Sentinel-1 and I need to make it smaller so that I can process it without my memory crashing. Using QGIS I generated the command to mask an image based on a shapefile using Raster > Extraction > Clipper.The command was <code>gdalwarp -q -cutline my_shapefile... | gdalwarp clipping produces a black image | gis | 2017-04-11T02:29:46.637 |
[
{
"message": "I can easely create <a href=\"http://www.gdal.org/gdal_vrttut.html#gdal_vrttut_warped\" rel=\"nofollow noreferrer\">VRTWarpedDataset for one file. <pre><code>import gdal,osrin_ds = gdal.Open('/path/to/input',gdal.GA_ReadOnly)out_drv = gdal.GetDriverByName('VRT')prj = in_ds.GetProjection()sr = osr.... | Is it possible to create VRTWarpedDataset with many sources using python and gdal? | gis | 2017-04-11T09:01:10.223 |
[
{
"message": "I am trying to perform a spatial join to join attributes from a point feature layer to the attributes of a line feature layer where the points are within a specified distance of the lines (so that these attributes can later be used in an update cursor). Currently, I am receiving a '000561: Relatio... | Arcpy Spatial Join- points within a distance of lines | gis | 2017-04-11T17:30:30.237 |
[
{
"message": "The Union function in QGIS appears to behave erroneously.I have two shapefiles that overlap with each other, but not within themselves. They are both valid (Vector > Geometry Tools > Check Validity), and ArcGIS Union works flawlessly on both.However, the Union function in QGIS (Vector > Geoprocess... | QGIS Union Error: multiple overlapping polygons created where only one should exist? | gis | 2017-04-11T23:03:27.527 |
[
{
"message": "Situation: I have a Python file called 'Hello.py' and another Python file called 'File1.py'. Hello.py imports File1.py.Hello.py code is:<pre><code>print 'hello people'import File1File1</code></pre>File1.py code is:<pre><code>print 'hello world'</code></pre>The files are located:<pre><code>My files... | Calling my Python file from the QGIS Python console? | gis | 2017-04-12T03:54:33.993 |
[
{
"message": "I can not understand the essence of the problem ...There is a web page with openlayers 4, on it as a base layers I can choose Bing, OSM, Yandex and others:<pre><code> src = new ol.source.BingMaps({ imagerySet: 'AerialWithLabels',//'AerialWithLabels', key: '---' }); bases... | openlayers 4 projections | gis | 2017-04-12T05:52:44.883 |
[
{
"message": "I found an interactive map on a website: <a href=\"http://www.acwr.com/economic-development/rail-maps/canadian-national\" rel=\"nofollow noreferrer\">hereThe map on the website looks like this:<a href=\"https://i.stack.imgur.com/9buy3.png\" rel=\"nofollow noreferrer\">Is there any way to do downlo... | Downloading features from website with interactive map as shapefiles? | gis | 2017-04-12T12:44:32.117 |
[
{
"message": "I am trying to create an application that will require a network to be rebuilt several times in an iterative process, adding connections as it progresses. Every iteration needs to use the network created in the last iteration to create the next network.I am using pgrouting to calculate routes alo... | Split line at points where other lines touch it in PostGIS | gis | 2017-04-12T19:03:25.877 |
[
{
"message": "I have a whole stack of polygons that were supposed to be properly adjacent (vertex to vertex) to each other, but they are not. Through the process of cleaning this mess, I would like to visualize/run diagnostics to see which edges I haven't fixed yet. So I wonder what is the simplest way to do th... | Checking if polygons are properly adjacent to each other? | gis | 2017-04-12T19:43:59.557 |
[
{
"message": "I use OSM data. I need to find nearest street for GPS point. I wrote next SQL query:<pre><code>SELECT osm_id, name, ST_DISTANCE(geometry, ST_SetSRID(ST_POINT(37.72308, 55.47957), 4326), true) as dist FROM roads WHERE ST_DWithin(geometry, ST_SetSRID(ST_POINT(37.72308, 55.4... | Slow execution of request for searching nearest street to GPS point | gis | 2017-04-13T08:26:44.907 |
[
{
"message": "I try to download data from the city of Rome with this command:<pre><code>ogr2ogr -f GeoJSON EVC_rome.json \"http://services2.arcgis.com/NZMqCJwY3kMjFOqf/arcgis/rest/services/ricarica_elettrica/FeatureServer/0/query?where=objectid+%3D+objectid&outfields=*&f=json\" OGRGeoJSON -gt 1000</code... | Query ArcGIS mapserver REST | gis | 2017-04-13T10:19:47.320 |
[
{
"message": "When running the TPI tool in SAGA, I get this parameter-entry window:<a href=\"https://i.stack.imgur.com/Ong2n.png\" rel=\"nofollow noreferrer\">Under the section highlighted in the red box, what do these parameters mean? Do the search/neighbourhood grouping parameters mean cells? What would the \... | How would I determine my search radius when conducting a Topographic Position Index in SAGA GIS? | gis | 2017-04-13T14:44:15.127 |
[
{
"message": "I have a csv file which I converted to points. It contains features that are a mix of lines and polygons. Format is below. Now I would like to use the point to line processing tool to generate the lines and polygons. Not sure if my csv format needs to be changed but it does not separate each f... | Point to Line for lines and polygons | gis | 2017-04-14T14:54:44.020 |
[
{
"message": "Im looking for a way to show different markers for the two waypoint that are initialized by leaflet.routing.control. This is what i tried:<pre><code>var controlWalk = L.Routing.control({ lineOptions: { styles: [ {color: 'white', opacity: 0.9, weight: 9}, ... | Leaflet routing control change marker icon | gis | 2017-04-15T08:19:58.790 |
[
{
"message": "I have python installed here:<pre><code>C:\\Program Files\\QGIS 2.18\\apps\\Python27\\Lib\\site-packages\\pythonwin</code></pre>When I click on pythonWIn I get this error:The application cannot locate win32.ui.pyd (or Python) 126. The specified module could not be found. I got python 2.7.5 when I ... | Starting pythonWin in QGIS directory? | gis | 2017-04-15T08:42:29.117 |
[
{
"message": "I am still a beginner with GIS. I can't find an easy way to get a maximum distance from multiple points. I have a layer of up to 100 points (without a unique ID - maybe that is part of the problem? but I could easily add that) and I want to get the length of maximum distance between any two of the... | Getting longest distance between multiple points and creating multiple polygons from lines using QGIS? | gis | 2017-04-15T20:57:35.873 |
[
{
"message": "I have multiple features that I display, and on click a popup appears, with a button to store it to favorites (with intention of show only favorites afterwards) The thing is, when I click the button, I retrieve the selected feature through the select interaction, but the feature that retrieves is ... | Selected feature is not feature type | gis | 2017-04-16T10:47:55.873 |
[
{
"message": "I'm unable to add a projection to a newly-created <code>raster</code> with <code>GDAL-python</code>, using the code below:<pre class=\"lang-py prettyprint-override\"><code>arr = np.random.rand(600, 400)filename = 'path_to_file_'driver = gdal.GetDriverByName('GTiff')x_size = arr.shape[1]y_size = ar... | Unable to attach a projection before creating a GDAL image | gis | 2017-04-17T16:56:31.473 |
[
{
"message": "Long story short I cannot get the attribute(s) back for labeling after assignment. I must not be doing it right. I format the attributes as follows: <pre><code>{'fipscode': '09003','state': 'ny','county': 'kings county','speccode': 'AWSB1U','callsign': 'WQGA906','fcc': 'Cellco Partnership','lease'... | Unable to retrieve attributes after assignment | gis | 2017-04-18T05:02:13.563 |
[
{
"message": "I am digitizing lines and have to keep certain distances to other lines while digitizing.Normally I would just use a buffer to generate these prohibited areas and snap to these polygons while digitizing. But I have only access to wms-layers so I cannot use snapping.Therefore I would like to adjust... | Use line style to adjust rubberband in QGIS? | gis | 2017-04-18T14:12:36.520 |
[
{
"message": "I am creating a model in ModelBuilder which includes the Buffer tool with user input. I need the user to be able to enter the distance in meters but if the data is only defined in geographic coordinate system the default units are degrees. Projecting the data apparently causes another issue (<a hr... | Input into a tool Buffer in meters without projecting the data | gis | 2017-04-19T00:19:22.553 |
[
{
"message": "I am using geoserver to serve my shapefile data, and I use SLD as the style solution.There are two fields in the data related to styling: <code>type</code> and <code>status</code>. The <code>type</code> field contains values like <code>highway</code> <code>freeway</code> <code>parkway</code> and e... | Styling with sld in geoserver | gis | 2017-04-19T01:17:03.227 |
[
{
"message": "First time trying to draw an Openlayers map with GeoJSON instead of WMS, and not having much luck. My layer is hosted in Geoserver and is named 'sections', in a workspace called 'basic_map'. This is my code so far:<pre><code>var vectorLayer = new ol.layer.Vector({ source: new ol.source.Vector({... | Using GeoJSON in Openlayers 4 and Geoserver | gis | 2017-04-19T04:30:37.383 |
[
{
"message": "I have a set of 560 building points and a set of many thousand points representing each meter of a tunnel that is under construction. I don't (only) need to know the nearest, but the distance between each building (red) and every single tunnel point (in blue):<a href=\"https://i.stack.imgur.com/EM... | Convert a set of points to multiple single points? | gis | 2017-04-19T12:36:34.833 |
[
{
"message": "is there a way to enter a numger in the field and the data would fill up according to my specifications?? example : i have to name things that has fixed names only different numbers that are related ..such as the format is \"FATx-FDTxx-OLTxxx\" and id write only 36 and the data would show \"FAT36-... | QGIS attribute input format | gis | 2017-04-20T07:56:49.763 |
[
{
"message": "In leaflet, how can I manage the filling option? More specifically, I would like to fill inside a circle until a certain border not the whole geometry. Is that possible? <a href=\"https://i.stack.imgur.com/JSBC5.jpg\" rel=\"nofollow noreferrer\"><br>I simply use L.Circle: <a href=\"http://leaflet... | Fill options for vector layers in leaflet | gis | 2017-04-20T09:32:01.557 |
[
{
"message": "<a href=\"https://i.stack.imgur.com/wbnLR.jpg\" rel=\"nofollow noreferrer\"><a href=\"https://i.stack.imgur.com/GBltp.jpg\" rel=\"nofollow noreferrer\">Why does this error occur? what could have gone wrong with my code? Code:<pre><code>import csv,shapefilecsvfile=\"C:\\Python27\\Conv.csv\"f=open(... | Indentation error while converting csv to shapefile | gis | 2017-04-20T11:30:46.837 |
[
{
"message": "I'm new to postgis and I'm trying to show that a point intersects a polygon.However, no matter how hard I try I can't.Here is the point: 0101000020E6100000000000009E2FC4BF629EA494D7BB4940Here is the polygon: <a href=\"https://mapit.mysociety.org/area/65731.wkt\" rel=\"nofollow noreferrer\">https:/... | Points not intersecting when they should | gis | 2017-04-20T11:55:47.740 |
[
{
"message": "I have a very large shapefile that is composed of many cells. If there are 4 cells together that have the same attribute value, I must locate a point geometry, like below:<a href=\"https://i.stack.imgur.com/hP6Db.jpg\" rel=\"nofollow noreferrer\">Each side of the cell is 625 meters long. Any ideas... | Creating a new point shapefile when vector grid features have a common attribute? | gis | 2017-04-20T14:00:28.143 |
[
{
"message": "I have a csv file Author, Name, Geometry.The Geometry column in the csv has rows like this <pre><code>{\"type\": \"Point\", \"coordinates\": [11.6285463, 42.4193742]}</code></pre>How do I import the json as geometry?I can import the csv to an existing table using the following:<pre><code>copy loca... | json to postgis stored in csv | gis | 2017-04-20T15:25:16.193 |
[
{
"message": "Is it possible to move a chart/graph to the top of the pop-up window in ArcGIS Online via its GUI? I have numerous fields to display and it works best if the chart is displayed first.Just the standard chart that the web map provides now would suffice. Having to modify HTML code seems a little much... | Moving chart to top of pop-up window in ArcGIS Online? | gis | 2017-04-20T16:02:50.777 |
[
{
"message": "In ArcGIS (Arcmap 10.3.1), I would like to change the 'Value' column for one item in my symbology key, as there is a spelling mistake (see picture). How can I do this? (Without deleting the row and creating a new one.)<a href=\"https://i.stack.imgur.com/ZdQYR.png\" rel=\"nofollow noreferrer\">",
... | Changing 'value' for entry in symbology table in ArcGIS Desktop? | gis | 2017-04-20T19:48:58.700 |
[
{
"message": "I am trying to merge two shapefiles from a zip obtained here:<a href=\"http://wsgw.mass.gov/data/gispub/shape/l3parcels/L3_SHP_M351_YARMOUTH.zip\" rel=\"nofollow noreferrer\">http://wsgw.mass.gov/data/gispub/shape/l3parcels/L3_SHP_M351_YARMOUTH.zipThe two shapefiles contain different attributes fo... | ogr2ogr the result of merging two shapefiles has attributes missing | gis | 2017-04-21T02:08:11.523 |
[
{
"message": "I want to filter columns in GeoServer WMS layer using 'ilike'. I tried following cql query.<pre><code>\"column_name\" ilike 'string'</code></pre>It works for columns of datatype string, not working for integer columns.How to convert integer column into string using CQL ?UPDATEUsecase Example: Let... | How to convert int to string in CQL filter GeoServer? | gis | 2017-04-21T03:10:45.670 |
[
{
"message": "When I click on \"information\" of a Landsat 8 image (bands 1,2,3,4,5,6 and 7 are combined), I get three RGB values: 10928, 10137 and 10265 respectively. What do these values mean? They don't correspond to the usual 0-255 RGB values.",
"role": "user"
},
{
"message": "It is because the ... | RGB values in Landsat 8 image | gis | 2017-04-21T09:51:59.580 |
[
{
"message": "I have a shapefile made up of a number of polygons. Neighboring polygons often share an attribute.What I need to do is buffer these polygons based on the common attribute. However, I would like to expand said buffers until they meet, at which point they can stop. I have a hastily put together mock... | Buffering polygon until it hits neighbor using PyQGIS? | gis | 2017-04-21T13:33:47.760 |
[
{
"message": "I'm trying to plot some polygons I obtained from a 2002 Census in Chile.I'm loading them to <code>geopandas</code>, converting them to <code>epsg='4326'</code> and then sending them to <code>Folium</code> (which is a wrapper for <code>Leaflet</code>).<pre><code>polygons = gpd.read_file('lim_polygo... | Projection (Datum?) slightly off for plotting Geopandas. Datum issue? | gis | 2017-04-21T20:02:45.653 |
[
{
"message": "I have implemented the pgrouting Dijkstra one-to-many algorithm, and have noticed that the result is a table of every route together, with and <code>edge</code> value of <code>-1</code> indicating the end of an individual route.I am interested in selecting the cheapest route of all the routing res... | Is the output of the Dijkstra one-to-many routing algorithm always sorted, cheapest to most expensive? | gis | 2017-04-22T14:59:36.470 |
[
{
"message": "I have a 10 meter cell size Oregon DEM that I would like to match my Northern California DEM thats at a 30 meter cell size. How would I go about changing the Oregon DEM cell size from a 10 meters to 30 meters using ArcGIS Desktop 10.5?",
"role": "user"
},
{
"message": "I believe by ex... | Changing DEM with 10 meter cell size into 30 meter cell size in ArcMap? | gis | 2017-04-23T02:53:16.470 |
[
{
"message": "I am working with chandrayaan M3 hyper spectral data. I need to create a band depth image for identifying mineral abundances. How do i calculate the continuum reflectance value for producing a band depth image? Is that a constant value for the whole band or should i calculate the continuum reflect... | Calculating band depth image for M3 data | gis | 2017-04-23T04:56:15.473 |
[
{
"message": "I have a <code>point A</code> (EPSG 4326) in Berlin, Germany:<pre><code>{ \"type\": \"Point\", \"coordinates\": [ 13.394994735717773, 52.514849775310154 ]}</code></pre>I want to create <code>point B</code> that is 500m to the east of <code>point A</code> and <code>point C</code> that... | What is a projection for Germany that preserves distance? | gis | 2017-04-23T08:31:01.890 |
[
{
"message": "QGIS is such an amazing tool with lots of useful features, so that it's easy to overlook some of them.Just to be sure it's not already implemented in QGIS 2.18:Is there any Attribute Table option to run a layer Action on all currently selected features?I'm using a Processing script as workaround, ... | Run QGIS layer Action on all selected features | gis | 2017-04-23T08:45:35.830 |
[
{
"message": "In Google Earth Engine I can clip the image using a shape drawn on the map canvas or by supplying a vector through Fusion table. This basically take the form.<pre><code>var boundary = ee.FeatureCollection('ft:1W78nK9f3rkXBG3iuDdBidFHVGVnzvAqh7UEjRbeq');var cliped = median_L8_2016.clip(boundary);Ex... | Google Earth Engine: clip image into multiple regions defined by a shapefile and name the output by value in a column | gis | 2017-04-23T09:13:48.677 |
[
{
"message": "In Google Earth Engine I can clip the image using a shape drawn on the map canvas or by supplying a vector through Fusion table. This basically take the form.<pre><code>var boundary = ee.FeatureCollection('ft:1W78nK9f3rkXBG3iuDdBidFHVGVnzvAqh7UEjRbeq');var cliped = median_L8_2016.clip(boundary);Ex... | Google Earth Engine: clip image into multiple regions defined by a shapefile and name the output by value in a column | gis | 2017-04-23T09:13:48.677 |
[
{
"message": "My problem is very easy to understand but I can't find a solution.I'm actually working on the spreading of a local optic fibre network. These fibres will be contained in plastic tubes buried in trenches. I need to know how many tubes we should bury in each trench. In GIS words : I make a buffer fr... | QGIS Count lines in polygon ( to be part of a graphical model ) | gis | 2017-04-24T09:58:41.520 |
[
{
"message": "I work with QGis 2.18.1 in Austria and need the city boundaries of Podgorica which is located in Montenegro. Do you know where I can get or download it for free?",
"role": "user"
},
{
"message": "Take a look at this question: <a href=\"https://gis.stackexchange.com/questions/177741/loo... | Seeking City boundary shapefile of Podgorica (Montenegro)? | gis | 2017-04-24T12:45:20.520 |
[
{
"message": "The recent release of <a href=\"https://www.gearthblog.com/blog/archives/2017/04/first-review-new-google-earth.html\" rel=\"nofollow noreferrer\">\"new Google Earth\" appears completely unsuited to the tasks for which I use Google Earth, so I figured it was time to see if I should migrate to ArcGI... | Editing imported KML in ArcGIS Earth? | gis | 2017-04-24T13:29:39.477 |
[
{
"message": "I'd like to extract a list of churches from OSM with their name, their coordinates and the name of the lower administrative division they belong to. I managed to get the first ones with:<pre><code>area[\"name\"=\"Mayenne\"]->.boundaryarea;way(area.boundaryarea)[\"building\"=\"church\"];out tags... | Listing churches with their administrative location using Overpass | gis | 2017-04-24T14:34:00.120 |
[
{
"message": "I have a raster map with trees in grass (1 and NULL value) for 6m resolution. I would like to aggregate this data in a grid with a resolution of 250m.For that I have created a grid with <code>v.mkgrid</code> and using <code>v.rast.stats</code> I what count pixel for each grid cell. It works perfec... | Grass-gis grid and Shapefile grid: what's the difference? | gis | 2017-04-24T15:22:24.820 |
[
{
"message": "I have an ArcGIS for Desktop Advanced license. I have an attachment enabled feature service in ArcGIS Online. I have thousands of files I wish to attach to it. By current process convention, these files are named according to 2 fields in the attribute table of the feature service (for current a... | Attaching ArcGIS Online attachments in bulk? | gis | 2017-04-24T15:55:32.117 |
[
{
"message": "I load wms from \"geoportal\" and it's good to time when I want show wms. Problems:Hidden default map - I want that WMS overlays on OSMTransform should be definedIt's look that:<a href=\"https://i.stack.imgur.com/271xP.png\" rel=\"nofollow noreferrer\">And some code:<pre><code>var extent = [78912.... | OpenLayers 3 - WMS Transform should be defined | gis | 2017-04-24T16:08:57.473 |
[
{
"message": "I have a layer of CircleMarkers and I am trying to remove only the markers that have a certain layerId. The id's for these circle markers are in a dataframe. In reality I have millions of id's whose subset to visualize depends on a different dataset which can change over time. So I need a dynamic ... | Removing specific Circle Markers in Leaflet Shiny | gis | 2017-04-24T20:21:22.607 |
[
{
"message": "I´m trying to do a \"detail map\" (one window with a bigger scale of one part of the map) over my \"main map\" in the print composer. But in this detail map I need to change the position of the labels in some specific objects of my vector's layer, but the problem is that the \"Lock layers for map ... | Showing differents label's position for the same vector object in two different view maps in the QGIS Print Composer? | gis | 2017-04-24T20:43:18.967 |
[
{
"message": "I was helping a patron find imagery in an area using ArcMap's World Imagery as a basemap, and found a troubling issue. We just needed low resolution imagery for locating study sites, as we were reloading the map often. However, on opening the context menu and attempting to remove layers from rende... | Turning off high resolution imagery in ArcMap World Imagery basemap? | gis | 2017-04-24T20:54:11.630 |
[
{
"message": "I was helping a patron find imagery in an area using ArcMap's World Imagery as a basemap, and found a troubling issue. We just needed low resolution imagery for locating study sites, as we were reloading the map often. However, on opening the context menu and attempting to remove layers from rende... | Turning off high resolution imagery in ArcMap World Imagery basemap? | gis | 2017-04-24T20:54:11.630 |
[
{
"message": "I am trying to find the shortest path between buildings and any electric plants on a network.The thing is, when I use the following query, I overload my RAM (network_nodes and network_edges each cointains a bit more than 120 000 rows and 5 columns) and therefore do not get any results.<pre><code>S... | Syntax of pgr_dijkstraCost() | gis | 2017-04-25T08:43:38.557 |
[
{
"message": "I have generated a 'bubble' map in Carto:<a href=\"https://i.stack.imgur.com/44QZx.jpg\" rel=\"nofollow noreferrer\">Custom CSS:<pre><code>#layer { [capacity >= 70000] {marker-width: 90; } [capacity >= 60000][capacity < 70000] {marker-width: 80;} [capacity >= 5000... | How to create a bubble legend in Carto? | gis | 2017-04-25T13:50:27.140 |
[
{
"message": "Is it possible to add multiple/all layers from a WMS service with PyQGIS?It is possible to add a WMS layer with PyQGIS if layer name to be added is exactly known. (which is 'MA-ALUS' in the code below)<pre><code>urlWithParams = 'url=http://kaart.maaamet.ee/wms/alus&format=image/png&layers=... | Adding multiple WMS layers with PyQGIS | gis | 2017-04-25T15:32:04.373 |
[
{
"message": "I have polygons as below, and each polygon is assigned to some value.<br>What I'd like to do are ...Smoothen boundaries (Values should change more smoothly around boundaries)Fill N/A part properlyGenerate raster data which met the aboveHow can I get such a raster data with QGIS ?<a href=\"https://... | Raster data like heatmap from polygons w.r.t their own values | gis | 2017-04-25T15:50:00.243 |
[
{
"message": "I am currently using ArcGIS online to create web maps and for mobile data collection; the data is stored/ created in a personal geodatabase, added to a .MXD and symbolized, etc. then pushed up to the web to create a web map. It is hosted by ArcGIS. I deal with a lot of users and a lot of data. Th... | ArcGIS online alternatives | gis | 2017-04-25T17:39:40.187 |
[
{
"message": "I simply would like to know if it is possible to export an animation map using the QGIS2web plugin so I may display a time series map on the web through the plugin?",
"role": "user"
},
{
"message": "See if you can find a copy of time2web, which does exactly what you want:<a href=\"http... | Exporting an animation (Time Series) map through QGIS2web plugin | gis | 2017-04-25T21:59:18.303 |
[
{
"message": "New to leaflet. Figured a method of adding popups to show features at several geographic locations on a map. Each popup gives information via embedded URL link for a feature at that location. Displays fine. Problem arises in that ALL popups display URL of the 1st popup added to map instead of disp... | Producing a webpage using leaflet | gis | 2017-04-25T22:47:36.280 |
[
{
"message": "i am making a qgis plugin and want to highlight a feature from feature id but the feature id must be taken from the textbox my code is below but this shows error like cLayer.setSelectedFeatures(me) TypeError: expected string or buffer<pre><code> inputid = self.dlg.lineEdit.text() ... | highlight feature from feature id in qgis | gis | 2017-04-26T08:59:01.800 |
[
{
"message": "i'm trying to load a geojson file on a leaflet map. here is the code :body :<pre><code><!DOCTYPE html><html><head> <title>map</title> <link href=\"leaflet.css\" type=\"text/css\" rel=\"stylesheet\"> <link href=\"index.css\" type=\"text/css\" rel=\"st... | Adding GeoJSON layer on leaflet? | gis | 2017-04-26T16:26:36.073 |
[
{
"message": "I'm trying to import a JSON file I got from a customer and convert it to a shapefile. The JSON file appears to have two Geometry types (Polygon and GeometryCollection). I can get the Polygons to import properly, however I cannot seem to get the GeometryCollection to import the Polygons they have... | QGIS does not show the Geometry Collection Polygons from JSON file | gis | 2017-04-26T23:16:15.747 |
[
{
"message": "I am doing research in water and climate. I have downloaded a map for <a href=\"https://www.arcgis.com/home/item.html?id=e750071279bf450cbd510454a80f2e63\" rel=\"nofollow noreferrer\">World Water Bodies that describes all the large water bodies that are drawn as polygons, and another map for small... | How to convert shapefile to a set of Latitude and Longitude coordinates in QGIS? | gis | 2017-04-27T12:19:21.690 |
[
{
"message": "I'm trying to get all my mapping data out of CARTO, but all that exports is .CARTO. Is there a non-proprietary format that I can export it to?",
"role": "user"
},
{
"message": "If your problem is about exporting data from CARTO. On the one hand, you can export your datasets as <code>Ge... | Are .CARTO files exported from CARTO Builder proprietary completely? | gis | 2017-04-27T13:37:05.777 |
[
{
"message": "I am very new to javascript and html. I am trying to display a web map, which works, but my issue is trying to figure out how to add a local geojson file to my html code. Here is what I have so far:<pre><code><!DOCTYPE html><html><head> <meta charset='utf-8' /> <ti... | Javascript HTML web maps | gis | 2017-04-27T16:16:00.843 |
[
{
"message": "I have a field of data with a lot of prefixes that are difficult to remove. They involve two letters and up to three numbers that are not separated from the Street Number with a space. For instance, W238N17W Sutter Street. The address is 17 W Sutter Street. I'd like to be able to strip the postal ... | Address Prefix Strip Using Python | gis | 2017-04-27T17:51:50.077 |
[
{
"message": "I've been trying to find the best way to calculate the rank of a value from a 3d numpy array. This array is created from 35 years worth of rainfall data rasters. I'm treating the last raster in the stack as the \"base\" raster for comparison of the ranking in this case.The numpy array's shape woul... | Calculate rank of 3d numpy array | gis | 2017-04-27T20:40:15.563 |
[
{
"message": "I'm writing some python to create grid lines, either as a series of densified LINESTRINGs or a set of MULTIPOINTs.The code uses shapely, and I'm writing WKT to a CSV and importing into QGIS(2.18.3) as a delimited file.I'm running this in a python venv with the following (output from pip freeze)<pr... | Odd behaviour with MULTIPOINT layer in QGIS using delimited files and WKT | gis | 2017-04-27T22:27:35.773 |
[
{
"message": "I am creating a \"tool\" add-in for ArcGIS 10 that basically draws a polygon where user left-clicks on map display and, as long as mouse is left-clicked, drags it around. When left button is released, polygon is erased.It should not be so complicated, but I'm struggling in making the polygon persi... | ArcObjects "Tool" add-in - Polygon not persisting in display while moving | gis | 2017-04-28T12:33:59.270 |
[
{
"message": "I just started working with qgis and I have two maps of a town. On the one map buildings are outlined by Points, like this.<a href=\"https://i.stack.imgur.com/HfnQW.png\" rel=\"nofollow noreferrer\">And the other map is just black with White Buildings. like this.<a href=\"https://i.stack.imgur.com... | Creating Polygons from black/white map or points using QGIS? | gis | 2017-04-28T12:36:51.857 |
[
{
"message": "I have house price data for the UK plotted by postcode, rendered as a heatmap.I have styled the heatmap to weight points by transfer price and not concentration of points, however I'm running into issues. (See below)Highlighted point contains 12 houses (with same postcode) at average house sale of... | Heatmap still renders to concentration rather than attribute | gis | 2017-04-28T15:46:59.070 |
[
{
"message": "I have a Garmin GPS that does handy things like waypoint averaging which is very useful in my situation where much of my data collection happens under heavy canopy in deep gullies which leads to inaccurate fixes. I often take several samples on different trips to get accurate positions.The Garmin... | Importing extension data from GPX files? | gis | 2017-04-29T02:36:15.960 |
[
{
"message": "Currently, openlayers supports bing maps, however this is not an ideal option for a commercial application. What would be ideal is to have the ability to host and serve ariel imagery like NASA blue marble at <a href=\"http://visibleearth.nasa.gov/view_cat.php?categoryID=1484\" rel=\"nofollow noref... | Using Custom Aerial Raster Imagery with OpenLayers 3 or 4 | gis | 2017-04-29T16:19:23.583 |
[
{
"message": "I'm trying to use the example in the Planet API documentation to retrieve an area (a 0.5km x 0.5km box) around an area of interest. I was able to activate the asset and get a download URL. However I'm getting this error:<pre><code>SystemError Traceback (most recent ca... | error in downloading subarea using gdal.Warp (SystemError: error return without exception set) | gis | 2017-04-29T17:20:35.903 |
[
{
"message": "I want to add a new field named 'TEST' to an existing attribute table (SHP) using Refactor Fields, but when I want to save as new shape, it says: Evaluation error in expression \"\"test\"\": Column 'test' not foundOf course it's not found, since I want to add it as a new field!Anyone a clue?It hap... | Add new field in QGIS using Refactor Fields doesn't work | gis | 2017-04-29T17:25:10.627 |
[
{
"message": "I am studying a monkey species, I have GPS observation points which I used to make a convex polygon (Hull). I also have all of the survey trails imported and displayed in QGIS (See screen shot for clearer understanding). As I have over 2700hr of survey tracks I want to select only the tracks or pa... | Select tracks or part of tracks that are within a polygon? | gis | 2017-04-30T17:50:25.127 |
[
{
"message": "I'm trying to download all the available Planet imagery for a site in California by cropping a subarea. I can see there's 112 assets of type REOrthoTile or PSOrthoTile for this site using the stats endpoint. I follow the procedure in the docs about activating & downloading assets, yet I can on... | Download quota for Open California dataset? | gis | 2017-05-01T20:04:28.840 |
[
{
"message": "I am currently facing a problem. Over the past week, I have been initiated to hydrology within the GIS environment and have finally successfully generated water basins (using the GRASS r.water.outlet) by selecting a pixel in my Flow direction raster generated from a DEM with r.stream.extractMy pro... | drainage basin for whole lake QGIS 2.18.7 | gis | 2017-05-01T21:14:46.753 |
[
{
"message": "I'm trying to add a Layer Control (for streets and towns) in Leaflet but can't get it to work - not sure where I've gone wrong. My code is made up of two functions. One gets data using AJAX (JSON), and the other plots the data. I wont post all the code, just the parts relating to the layers:<pre><... | Adding Layer control in Leaflet? | gis | 2017-05-01T21:29:03.987 |
[
{
"message": "I am trying to perform queries with esri leaflet and show the resulting polygon features with their appropriate popups by default (instead of having users click on the feature highlighted in order to open said popups). I have tried using the following lines, after the setting up the query paramete... | Show an esri leaflet feature's popup by default | gis | 2017-05-01T22:22:30.117 |
[
{
"message": "I'm trying to get the density of intersection points along their related ellipse. What I'm missing is the length of the arc of the ellipses comprised in between the yellow polygon (which is a landslide deposit).I would need help about step by step algorithm to calculate the distance between two po... | Calculating length of curved line derived from intersection between two polygons using ArcPy? | gis | 2017-05-02T10:17:02.310 |
[
{
"message": "I want to classify the slope of the DEM data, by dividing the slope by 4 classes: flat, ramps, steep, very steep.How to do this with QGIS?",
"role": "user"
},
{
"message": "You may apply an on-the-fly reclassification by right-clicking on the layer in the Layers Panel and then clicking... | Classifying slope (flat, slope, steep, very steep) in QGIS? | gis | 2017-05-02T13:08:22.283 |
[
{
"message": "I am using EasyButton plugin of leaflet (<a href=\"https://github.com/CliffCloud/Leaflet.EasyButton\" rel=\"nofollow noreferrer\">link). More specifically I applied EasyBar which unites several buttons.<br>Plus, at certain zoom levels, I add/remove various layers with zoomend function (<a href=\"h... | leaflet-> enable/disable statement "easybutton" | gis | 2017-05-02T14:44:05.800 |
[
{
"message": "I have a GeoJSON FeatureCollection object made up of several polygons and I would like to select the markers which lie within each polygon. The information contained within the markers is to be used to show average stats for each polygon.I have seen some suggesting using <a href=\"http://turfjs.or... | Selecting markers within a GeoJSON polygon (Leaflet) | gis | 2017-05-02T18:03:17.640 |
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